Fix crasher in GetDefaultSearchEngineName() in first run bubble.
- It seems that BrowserList::GetLastActive() is returning null, probably it takes longer now for the browser to become active.
- But rather than guessing the profile, get it from the guts of the location bar.
- crasher is ranked #34 by Laforge
BUG=6211
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=9916